Home / 1,315,979.51-1,974,157.29-405,238.91

Finding the Fourth Proportional to 1,315,979.51, 1,974,157.29 and 405,238.91

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Solution

The fourth proportional to 1,315,979.51, 1,974,157.29 and 405,238.91 is: 607,916.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,979.51 : 1,974,157.29 = 405,238.91 : x
  2. Step 2: Convert to fraction form
    1,315,979.51/1,974,157.29 = 405,238.91/x
  3. Step 3: Cross multiply
    1,315,979.51x = 1,974,157.29 × 405,238.91
  4. Step 4: Simplify right side
    1,315,979.51x = 800,005,338,497.37
  5. Step 5: Solve for x
    x = 800,005,338,497.37/1,315,979.51
  6. Step 6: Final answer
    x = 607,916.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.